PList on Mac for activation https


We all the time had issues on Mac with our products, the activation with the URL request is much longer on Mac than on Windows. We are using https.
As we are not familiar with the PList on Mac, we are wondering if that could be the issue.
Sometimes in the PList of other products, there is a website specified.


Is this the activation server URL? Does anyone have a clue why the https request would be much slower on Mac?